How do you factor $y= 3x^7 - 9x ^6 + 18x ^5$ ?

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Answer 1 · 2015-12-02T18:20:49

Factor $y = 3x^7 - 9x^6 + 18x^5$

y = 3x^5(x^2 - 3x + 6)
The trinomial can't be factored because its
$D = b^2 - 4ac = 9 - 24 = - 15 < 0.$

How do you factor y= 3x^7 - 9x ^6 + 18x ^5y= 3x^7 - 9x ^6 + 18x ^5 ?